Glass-grinding machine.



No. 825,454. ATENTED JULY 1o, 1996i o. L. GOBHRING w. TRGGHE.

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No. 825,454. PATENTBD JULY 10, 1906.

` C. L. GOEHRING n W. TROGHB.

GLASS GBINDING MAGHINB.

APPLIUATIGN FILED MAY 1.8, 1904. REFEWBD DBU. 13, 1905.

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No. 825,454. Y PATENTED JULY 10, V1906. C. L GOBHRING a W. TEOGHE.

GLASS GRINDING MACHINE.

APPLIUATIGT FILED HAY 18. 1904, RENEWED DEU. 1S, 19795.

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l l l i `l i l 'l i H l l s a i f l i i No. 825,454. PTBNTED JULY 1)l 19GB. G. L. GOEHRNG & W. TRUGHE.

GLASS GRINDNQ MCHINE. ArrLwA'rIon FILED un 1a. 1904. nznnwnn DB0. xs. wos.

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No. 825,454. PATBNTED JULY 10, 1906. C. L. GOBHRING W. TROCHB.

GLASS GRINDING MAGHINE. AP'PMGATION FILED MAY 1s. 1904. nmmwn Mm. 1a, wos.

PATBNTBD JULY 1o, 199s,

U. L. GGBHRING n W. TROGHE.

GLASS GRINDING MACHINE. PrLxoATIon HLBD un 1s. '1904. nmmwm) DBO. 1a, 1905.

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. and arrangement of the parte, whereby the' handling of the glass is facilitated,YV the'speeriV UNITED STATES PATENT OFFICE.

CHARLES L. GOEHRING AND WILLIAM TROCHE, OF AKRON, OHIO; SAID 'PROCHE ASSIGNOR T() SAID GOEHRING.

GLASS-GRINDING MACHINE.

Specification of Letters Patent.

Patented July 10, 1906.

Ap'i'ilsatlrm llled Mey 18i 1904. Renewed December 13, 1905. Serial No. 291.630.

To all whom it may concern.:

Be it known that we, CHARLES L. Goan RING and WILLIAM Tnocnn, citizens of the United States, residing at Akron, in ,the county of Summit and State of Ohio, have invented certain new and useful Improvements in Glass-Grinding Machines; and we do hereby declare the following to he a full,

clear, and exact description of the same, rei--V erence being had to the accompanying drawings, forming a part of this specification and to the letters of reference marked therefrni.V

This invention relates to improvements in glass-grinding machinery, and more espe' cially to machinery for beveling plates by e grinding operation, although features ,ofthe Vinvention are applicable to glass-grinding generally.

The objects of the invention are to eimpliiy and improve the mechanical construction of operation increased, and the weer and tear on the working mechanism reduced to a minimum.

The invention consists in certain novel deteils of construction and combinations and arrangements of parte, all as will now be described, and the particular features of novelt pointed out in the appended claims.

leferring to the accompanying drawings, Figure 1 is an elevationlooking at'the righthand side of a bowling-machine embodying the present improvements, portions being broken away or omitted to prevent obscurity. Fig. iis a detailvsectional view. Fig. 2 is a similar view looking at the opposite side of the machine. Fig. 3 is a front elevation. Fig. 41's a rear elevation; Fig. 5, atop lan viewwith theoverhangin arms,a drive-s aft With attached arts bro en awa 7, 8, and 9 are etail sections. an of the adj nstalole pivotal bed and clamps. Figs. 10 and 11 are detail views of the pointer and scales for indicating the angular adjustment ofthe bed and clamps for controlling the depth of the bevel.

Like letters of reference in the ures indicate the same parte. Y.

By reference to Figs. 1 to 5 it will be .seen that the Working parts of the -maehine are mounted in a frame A of approximately rectangular form and having an overhang or upwardly-extending arms A, in which the elevations Ving to the necessary bevel from one edge to the other oi the .E will be rotate FisS- 6...

support for the glass severaliig y Ywill eliect the engagement of the other of the Vprille s, both pulleys losing ree when the main drive-shaft B is journaled. The grinder C, which in the present instance is in the form of a cylinder, is located below the main drive-shaft and below the level of the lass plate, so as to o erate on the under si e of therear edge of t 1e late. It is supported in bearings C, throug which the shaft of the grinder asses, and said bearin s are in turn mounts on or form ortions o a carriage or carriages C2, adapte to slide onways C3, eX- tending parallel to the plane of the bevel or surfaces to be ground and preferably formed in the side portions of the frame A. As shown, the ways C3 extend horizontally Vfrom front to rear of the machine, and the grinder has a movement thereon correspondtraverse in cutting a.

ground surface. Rotation is imparted to the grinder by drive-chains B", running over sprocket-wheels B2 on the drive-shaft and grinder-shaft, respectively, a sufiioient slack eing left in said chains to permitvthe grinder to move on the ways C3, as well as to move longitudinally of its axis, as will be hereinaf ter ointed out.

he power for moving the grinder onthe ways Cs or causing it to traverse with respect to the Work is transmitted to the carriages C2 by connecting-rods D, extending back to the rear of the machine and jointed to crank-arms D on a transverse rock-shaft Di. The rock-shaft D is oscillated through Vgearing and driving connections with aseoond ary drive-shaft E, the latter receiving its motion Vfrom the main drive-shaft B through suitable pulleys E E and E E2the belt cennecting the pulleys E E* being a crossed belt, whereby the ulleys E E on the shaft d) in opposite directions. VIt will .be understood that said pulleys E E2 on the shaft E are loose thereon, and the cononction between said pulleys and the shaft 'E is ellected by the clutch, hown 1n section g in Fig. 4 at E2) which clutc when moved in one .direction longitudinally of the shaft will eii'ect the engagement of one ofthe pulleys and when Vmoved in the opposite direction elutc is in an intermediate position. The shaft E carries-a worm F, meshing witha worm-gear F on a short shaft F, journaled in the main frame and carrying at its forward Soy end a beveled pinion F3, meshing with a bevel-wheel F' on a transverse shaft F3. The latter shaft F3 carries a pinion F, meshing with a gear F7 on a second transverse shaft F, pref erabl y extending entirely across the frame of the machine and having a central crank-arm provided with an adjustable crank-pin G', Fig. 2, to which a link or adjustable connecting-rod G2 is ointed at one end. The opposite end` of said link or conncctirig-rod is connected with a central crank-arm D"l on thc shaft D2, before described.. The connections between the connecting-rod or link G2 and the crank D3 is a shiftable connection, whereby the said connection may be moved nearer to or farther from the axis of the shaft D2 to effect a relatively rapid. or slow traverse of the grinder.

The mechanism illustrated is designed to give the grinder a rapid movement during the initial and final portions of its traverse, with a slower intermediate movement. The reason for this is that during the initial and final portions of the movement the work done by the grinder and friction between the grinder and glass are relatively light, and as a consequence the grinder may be advanced with rapidity; but during the time the grinder is removing the greatest thickness of glass the friction and resistance are great, and the grinder should be given a correspondingly slow movement of traverse, both -m order to effect a more perfect grinding and to prevent stalling the machine or breaking the glass by excessive pressure. The movements referred to are automatically accomplished by automaticall shifting the connection between the link (lf2 and crankarm D3, for which purpose the said connection is formed by a shaft H, mounted on the upper end of a link or fork H', Fig. 4, the latter in turn being carried by a crank-arm H2 on a short transverse shaft H3. The

s shaft H3 carries a bevel-gear H4, meshing with a corresponding gear H on a vertical shaft H3. Shaft H carries a bevel-gear H7, meshing with a bevel-gear H3 on the shaft F2. The gearing between the shafts F2 and H3 is so proportioned that the said shafts will be rotated in unison, and when the stone or grinder is at either extreme of its traverse the crank H2 is turned to its highest position, or with the connection between the link G2 and crank D3 in its position of adjustment nearest the shaft D2. During the traverse of the stone the shaft H3 will have made one complete revolution and the said connection will have been moved first down or away from the shaft D2, thereby gradually decreasing the speed of grinder traverse until a minimum is reached half-way between the extreme of the movement and then back to its initial position, again increasing the speed of the movement to its maximum.

The proportioning of the gearing between the shaft F2 and the shaft Fs is preferably .inch that one complete rotation of thc shaft F2 will move the shaft F through approximately one -eighth of a revolution. rlhe movement of the shaft F2 througli this portion of the arc of a circle gives a practically uniform thrust and speed to the outer end of the conimeting-rod. G2 and in range is sufiicient to effect the desired traverse of the grinder. Y

As before stated, the traverse Inovements of the grinder are controlled bv the clutch E, and in order to automatically arrest the movement at the proper time and to permit of the inau uration of the movements )y the attendant t e said clutch is controlled by a clutch-arm I, mounted on a vertical shaft I, Figs. 1 and 4, having at its lower end an operatin -arm I2, connected to the rear end of a shi ting rod I3, mounted in suitable guides on the frame and provided at its forward lend with an operating-lever I, by which the attendant may shift the clutch in one direction or the other. On the rod I3 are two oppositely-located springs i, held between bearings i on the frame, and between which springs is a pin or projection i2 on the rod I3. These springs serve to bring the rod back into position with the clutch E3 central no matter in which direction the said rod is moved, and to insure the proper positioning of the clutch the pin or projection i2 works through a fork or sto i3 on the frame and normally rests within t e same, while the ends of the springs i seat against said fork i3, from which it follows that when in its intermediate osition the said pin or projection is free.

fiom the springs; but when moved in one direction or the other it will compress one or the other of the sprin s, leaving the opposite s ring unaffected. hen the attendant tlirows the clutch into engagement with one or the other of the pulleys by shifting the rod I3, the clutch is retained in engagement by projections I5 on the rod I3 engagin springressed pawls or stops I, mounte on the rame, referably above the rod I3 and having at t eir upper ends heads or overhanging parts I2, under which knock-off projections or inclines I2, adjustably mounted on the carriaee C2, (see Fig, 1,) are ada ted to pass as sai( carria e reaches one or tllie other of the extremes o its movement. As the knock-off projection lifts the pawl or stop I6 the clutchrod is released, and the springs automatically shift the clutch to its intermediate position, this movement being effected when the carriage and grinder are moved in either direction, and as a result while the attendant inau urates the traverse movement of the grin er such movement is automatically arrested at the proper instant, and the attendant must inaugurate a movement in the opposite direction. The pulleys E E and ICO IlO

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El t are so proportioned as to give a somewhat slow advance movement lto the grinder and a relatively rapid return or reverse movement.

The glass or work to he beveled is elainped against a bed located on the saine side of the work as that upon which the grinder is located. ln the machine illustrated the bed against which the Work is clamped is therefore located below the Work, inasmuch as in this machine the work passes above the grinder. The bed referred to is indicated in the accompanying drawings by the letter K, and While it is held in fixed position during the grinding operation it is nevertheless adapted to be adjusted in such manner that the Work may have bevels of different depth or width round thereon.

As be ore stated, the glass is clamped algainst the upper surface of the bed K, the c amping being effected by a plurality of clamps L, (operated by ineans to ently deseribed,) and the bed K an are preferably carried by a frame Kzanvnn' lariy adjustable in a vertically-adjiistalhle swinging frame formed by side pieces K2, jonrnaled in the inain frame at K and conf nested by a erosspiece K4. The frame K isVVV provided with extensions of the side piece orming arms K", projecting towardY and ontside of the grinder at each end to provideioV the assa e oi' the grinder between them, andY the lied is provided with similar arins K7, Figs. 1, 2, 5, 7, and 8, theV ends of the arms K and K1 being pivotally connected on an adjustabie axis which is in line with the upper surace of the bed and as nearly as possible coincident with the inner edge of the bevel,

as shown in Figs. l and 2.

In o eration it is designed that the frame for-inedp by the side pieces K2, &c., shall be swung on its pivots K3 to bring the bed, clam s, and g ass held thereby down intoY beve ing position, the Swingin movement of the arts being limited b a justable sto sY lr", ig. 1, With which ilat aces le on the si e pieces K2 contact, and to lock the parts With the glass in grindin position the ends of the i arms Ki are adapte to be clamped and held by a manually-controlled locking mechanism. This loe mechanism referably consists of clamps a on the main ame and movable clamps 7c", controlled by a cross-rod kl", on one end of 'which is a nut le, adjustably connected with a lever-arm lc. The endsY of the arms K7 pass between'the clamps,VVV and when the lever-arm le? is turned the clamps are drawn tightly together, thereby locking the glass-supports rigidly in 'osit1on. ForY manually controlling the locliin -elamps el" handdever if is provided, said Fever being connected with the lever-arm 7c by connecting-rods lc and a bell-crank lever k1". The hand-lever itself may be locked by a spring- Y 65 pressed pawl le, F s. 1 and 3, engaging a be pres-Y d clamps ils 'heveiwhere the notch in the gu ide-segment 7c, and in the preferred construction. an adjustable shoulder ci, Fig. l, is provided on the connectingrod lc and adapted to engage the lower portion of one of the side pieces K, so to raise the giass from. the grinder by a continued movement i ofY the hand-lever 7c after the clamps have been released.

The pivots K3 are preferably made vertically adjustable, for which purpose their bearings are guided in vertical Ways d on the main freine and supported by screws o', journaled in the main frame and having bevel-gears a2 at their lower ends, with which similar gears a3 on a cross-shaft a? inesli, whereby the pivots may be simultaneously ad'usted to raise or lower the Whole glassholding mechanism. with relation to the grinder.

By pivoting the bed on an axis coincident with the inner ,ed e of the bevel the angle or inclination of the ed may be varied to give diiierent depths of bevel Without changing the width of the bevel, and provision is made for adjusting the angle of the hed and holding it in adjusted position through the medium of an adjusting-sereaT KS, joernaled in a safingfbearing c on the cross-piece K4.

The airis Von which the bed Yand clamps are angolari f adjustable. may be line with either Ve ge of the bevel or at an intermediate point, but is preferabl Y at the inner edge in order that the depth o the bevel may be varied b simpl adjusting the angular posiu tion ofy the bedl.7 To make provision forvarying the Width of thebevel, the axis is made adjustable nearer to or farther from the edge of the glass, and by reference, particularly to Figs. 6 7, and 8,it will be seen that the arms K and K7 are slotted to forni Ways in which bearing-blocks P P2 may slide. Said blocks are pivotally conneet'edlay a 'ournal .Pl and are adapted to be secured in a justed position b set-sorews p or by a clampingplate P, ying outside of the arni K and adaptedhtorbe clamped to the block P2 by screwsn 2. The blocks and journal may be conveniently adjusted by an adjustingscrew P5, and the position of adjustment may be indicated by graduations and a pointer p5, as shown clearly in Fig. 1. These graduations and ointer p5 will indicate the Width of the bevelhur the distance ofthe axis from the edge of the glass, and in order that the depth may be readily indicated the bed K is provided with a pointer m and the frame K2 with Va series of scales for indicating the adl tenants necessa for vdiiierent depths of Y Width is known. Fig. 1 1 shows the pointer and scales clearly, 'and b reference to this figure it will be seen that t ee sets of graduations are illustrated, Vthe rst indicating one-sixteenth of an inch depth, the second three thirty-seconds, and the third one-eighth. vThe Vgradinitions in ICO IIO

each. column indicate the adjustment or angular position of the bed necessary to form bevels of these depths where thc width is as indicated by the graduations. For illustration, if the machine is set for bevels on(` inch wide and the plate requires a bevel oneeighth deep, the bed is adjusted until the pointer registers with the one-inch graduation in the one-eighth column. If the next plate is thin and requires but a bevel onesixteenth. deep, the onter is made to register with the one-incli graduation in the onesixtcenth column.

The graduations or scales, it is obvious, maybe extended sufficiently to embrace all ordinary requirements of the trade, and at the same time the adjustments are so simple and clear that the work may bc performed by ordinary unskilled labor.

The plural clamps L for pressing the glass down on the bed K are preferably sus ended by somewhat loose joints from the endns of an evener L, which latter is in turn pivotally supported on the lower end of a slide L2, working verticallyin a guide in the circle L of the bed. To operate the clamps and slide, the latter is formed with a rack on its rear side, with. which a pinion L4 meshes. Pinion. L4 is mounted on a shaft L5, which also carries a worm-gear L and a worm U, controlled by a hand-wheel L8, serves to both 'operate and lock'. the parts in adjusted position.

Stop-arms N, mounted on a shaft N, serve as a means for accurately positioning the edge of the glass, said arms being adapted to be swung up out of the way of the grinder by means of a hand-bar N 2, connected with the shaft N by an arm N3, as has heretofore been employed in this class of machines.

Inasmuch as the greatest weight is on one side of the axis on which the Whole glassholding mechanism turns, a counterbalance in the form of a weighted lever V, connected to the cross-piece K4 by a link V, is preferably provided to assist the attendant in raising the glass from the grinder after the beveling operations have been completed.

In the present machine it will be observed ,that the grinder is located below the level of the glass and on substantially horizontal ways. Where the grinder is located below the level of the glass, it is entirely practicable to use an abrasive in comminuted formsuch, for instance, as sand, emery, and the like-and such abrasive material may be fed to the top of the grinder from a sand-box W. The grinder may be located in a chamber or compartment formed by the partition X, dotted lines, Fig. 2, having an outlet or discharge duct X at one side of the machine, as shown clearly in Fig. 2. Thus the grinder may, if desired, be run with its lower por tion in a body of Water so as to insure a full supply of water to the grinding-point.

When desired, the grinder maybe given a longitudinal n'ioven'ient by means of a lever y, pivoted on the main frame and oscillated by a crank y on the shaft y, the latter being rotated through gearing y3 y and` a belt 5, extending up to a pulley on the drive-shaft llaving thus described our invention, what we claim as new, and desire to secure by Letters Patent, is*- 1. In glass-grinding machinery, the combination with an singularly-movable frame a bed against which the glass is positioned angularly adjustable in said frame and a rotary grinder, said bed and grinder both located below the plane of the glass and having a traverse with. respect to each other to effect the grinding operation, of means located above the plane of the glass for clamping the glass against the bed; substantially as described.

2. In a glass-grinding machine, the combination with a grinder and a pivotally-adjustable bed both located below the plane of the glass and having a traverse with respect to each other to effect the grinding operation and whereby the angle of the plane of the glass may be varied with respect to the plane of the traverse, of means located above the plane of the glass for clamping the glass against the bed and a pivoted frame in which the bed and clamping means are mounted, adapted to turn on its axis in moving the glass toward and from the grinder; substantially as described.

3. In a glass-grinding machine, the combination with the glass-support, of a rotary cylindrical grinder journaled in bearings mounted on ways located below and extending transversely of but parallel with the plane of the surface to be ground at right angles to the axis of the grinder, means for effecting a traverse of the grinder on said ways and means for rotating the grinder during such traverse substantially as described.

4.V In a glass-beveling machine, the combination with the grinder, of a pivoted frame, a bed against which the glass is clamped pivotally mounted in said frame on an adjustable axis and means for clamping the glass against the bed and for adjusting the angular position of said bed in the pivoted frame.

5. In a glass-beveling machine, the combination with the grinder, of a pivoted frame formed of side pieces having rearwardly-projecting arms, a bed against which the glass is clamped having rearwardly-projecting arms, adjustable pivotal connections between the arms on the bed and side pieces, means for controlling the angular position of the bed around said pivotal connection and means for controlling the angular position of the side pieces with relation to the grinder; substantially as described.

6. In a glass-beveling machine, the combination with the grinder and a pivotal frame IOO IIO

l embodying side pieces having rearwardlyf projecting arms, oi a bed mounted in said pivoted frame between the rearwardly-cxtending arms and a locking mechanism cooperating with said arms for holding said frame and bed against ivotal movement; substantially as described? 7. In a glass-lieveling machine, the combi nation with the grinder, the pivoted frame, the hed against which the glass is clamped mounted in said 'frame and means for clamping the glass against said bed, of a locking mechanism embodying clamps, a screvvior moving said clam )s toward each other, and' a manually-controllable lever for operating said screw; substantially as described.

8. In a glass-lieveling machine, the combination with the grinder, the pivoted frame, the bed against which the glass is clamped mounted in said frame, and means for clamping the glass against the bed, of a locking mechanism for the frame and bed, and a hand-lever with connections between said hand-lever, locking mechanism and frame, whereby when the hand-lever is moved, the locking mechanism will be released and the frame moved on its axis.

9. In a glass-lieveling machine, the combination with the grinder, pivoted frame, the bed against which the glass is clamped pivotally mounted in said frame and means for clamping the glass against said bed, of a lock ing mechanism for holding the bed a ainsi; pivotal movement, a hand-lever an connec-tions between said hand-lever ivotal frame and locking mechanism, for re easin thelocking mechanism and by a continue movement tilting said frame on its axis.

l0. In a glass-lieveling machine, the combination with the grinder, the pivoted frame, the bed against rvhich the glass is clamped mounted in said frame and having rearwardly-proj ecting arms and means for clamping the glass against said bed, of lockingclamps coperatm with the rearwardly-projecting arms of the ed and means for operating said clamps'to lock the bed against rnove-VV ment; substantially as describ 1l. In a glass-lieveling machine the com bination With the grind cr, the pivoted frame, the bed againsiI which the glass clamped pivotally mounted in said frame and having rearwardly-projecting arms, of means for adjusting the angular position oi the bed in the frame, lockingwlamps cooperating with the rearwardly-projecting arms slid manuallycontrolled means for elierating said clamps; substantially as descriiied.

12. In a glass-lieveling machine the oombination with the rotary grinder mounted on substantially horizontal Ways, means for rotering said grinder and means for moving it on said ways transversely of its axis-,ol rolf tion, of' a ivoted iframe and bed againsl4 which the glliss is clamped pivotally mounted in said frame on an axis substantially coincident with the bevel, means for limiting the pivotal movement of the frame and I means for adjusting thc angular position of the bed in the frame; substantially as described.

13. In a glass-grindin machine, the coinbination with the grin er, of the pivoted frame having rearwardly-projecting arms with uideways therein, a bed against which the glass is clamped, having rearwardlyproljecting arms with guideways therein, pivota ly connected blocks mounted in the guideways in said arms and means for locking said blocks in ad `usted position Whereby the .pivotal axis o the bed in the frame may be varied in accordance with the width of the bevel to be formed.

14. In a glass-grinding machine, the comh bination with the grinder of a bed a {ainst which lhe glass is clamped, an adjustab e axis about which said bed is angularly movable, means for adjusting the angular position of said bed, a pointer and a series of scales indieating the angular osition of the bed in forming bevels of diflrent depth and width; substantially as described.

CHARLES L. GOEHRING. WILLIAM TRCHE. 

